The sealskinz merino liner socks are close fitting liner socks with a high merino wool content that can either be worn on their own or can be layered under a pair of other socks for additional comfort increased moisture control and insulation these liner socks are ideal for pairing up with sealskinz waterproof socks as an outer to offer you the best combination of warmth and waterproof protection ideal for cycling walking and everyday use in the colder months